... Composition 1) Coil car: Main structure: it is composed of steel, wheel, guiding pole,transmission shaft, etc. Weight capacity: 10 ... : it is composed of steel plate, four arc steel plate, slide block, main shaft, side board, bearing, bearing base, pneumatic brake device. ... operation, reduces cost 4) Roller is made of solid bearing steel; grind it after thermal treatment, good abrasion resistance and ...